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Mining Bitcoin with pencil and paper
 
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Bitcoins are mined using a cryptographic algorithm called SHA-256. This algorithm is simple enough to be done with pencil and paper, as I show in this video. Not surprisingly, this is a thoroughly impractical way to mine. One round of the algorithm takes 16 minutes, 45 seconds which works out to a hash rate of 0.67 hashes per day. For details, see http://righto.com/sha
Views: 1189629 Ken Shirriff
Bitcoin Transaction Details - Part 1
 
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A look at how a transaction is constructed This video is part of a larger online course, "From Barter to Bitcoin: Society, Technology and the Future of Money" run by Prof. Bill Maurer and Prof. Donald J. Patterson In addition to the video on YouTube there is a variety of other content available to students enrolled in the class. "In 2008, a person calling himself or herself or themselves Satoshi Nakamoto released a paper suggesting a system for an anonymous, peer-to-peer alternative money. Bitcoin was born. Although not the first digital currency ever proposed, nor the first challenger to fiat money, bitcoin is the first to have captured the broad imagination of speculators, coders, regulators, criminals and the mass media. This course puts Bitcoin in context: how do we understand money as a social, political and technological phenomenon? From discussions of ancient transactions to the rise of state-issued currencies, we will explore the social and technical aspects of bitcoin, its predecessors and potential successors, and how its features echo aspects of many different historical transaction systems. No prior knowledge of economics or computing is required. There is little academic writing on bitcoin. And this may be the first truly academic class on the topic. We want to put bitcoin in a wider perspective, to reflect on what it means for society, politics and economics, as well as how it helps us think about money both a social and a technical phenomenon. This class is not an advanced seminar on bitcoin--we will not be delving deeply into the inner workings of the system, but instead providing a bird's-eye overview with enough technical detail for you to be able to put media stories, hype and hope around bitcoin in perspective. Similarly, this is not a class in monetary economics--we won't go too deeply into monetary theory or policy, the money supply, or inflation. Instead the class invites you to think more deeply about one of the oldest systems of technology on the planet, and most ubiquitous: money, whether coin, cash, credit card or cryptocurrency, we humans have been making money for most of the past 10,000 years. How we do so in the future is a question bitcoin just maybe helps us answer."
Views: 37533 djp3
How Bitcoin mining actually works - What is the "cryptographic puzzle"?
 
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In this video I try to breakdown the "cryptographic problem" that people reference when they talk about bitcoin mining. 13uJjYF12aRVdwaiTmALx5XDfguQ9MnYtK
Views: 64858 Keifer Kif
Bitcoin - Transaction block chains
 
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The mechanics of a bitcoin transaction block chain, which is a construct that is generated by bitcoin miners and functions as a global ledger for recording and validating bitcoins. More free lessons at: http://www.khanacademy.org/video?v=QzDO44oZWtE Video by Zulfikar Ramzan. Zulfikar Ramzan is a world-leading expert in computer security and cryptography and is currently the Chief Scientist at Sourcefire. He received his Ph.D. in computer science from MIT.
Views: 210667 Khan Academy
Building a Blockchain in Under 15 Minutes - Programmer explains
 
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I wanted to demonstrate that the concept of a blockchain that powers almost all of the modern cryptocurrencies is very simple at its core. Bitcoin, Ethereum, Litecoin etc all are based on this blockchain technology. Many people think that the blockchain is a complicated thing while at it's core its just a clever use case of hashes. Enjoy guys! CODE: https://github.com/ivan-liljeqvist/SimpleBlockchain JOIN MY EXCLUSIVE MAILING LIST FOR EVEN MORE BLOCKCHAIN KNOWLEDGE: http://eepurl.com/c0hyc9 ESSENTIAL CRYPTO RESOURCES Hardware wallets: ♥ TREZOR https://trezor.io ♥ LEDGER NANO S https://www.ledgerwallet.com/r/4607 To buy cryptocurrencies: ♥ Coinbase https://www.coinbase.com/join/529bab0ab08ded7080000019 JOIN SLACK COMMUNITY http://slack-invite-ivan-on-tech.herokuapp.com https://steemit.com/@ivanli
Views: 405316 Ivan on Tech
Blockchain/Bitcoin for beginners 6: blocks and mining, content and creation of bitcoin blocks
 
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In this video we introduce the basic concepts behind how new blocks are created in the Bitcoin blockchain. We start by taking another look at the blockchain.info website to see some sample blocks and then to a quick screencast explaining how new, unconfirmed transactions are collected by mining nodes and included in new transaction blocks, whose header needs to be hashed along with a random number to produce an output hash meeting a set requirement. I mention that the requirement is that the generated hash starts with a specified number of leading zeros...this is a slight (and very common) simplification, the reality is that the hash must be LESS than or equal to a specic 256 bit binary number. See here: https://youtu.be/4QxOUwG8a2Y I introduce the concepts of difficulty targets and validation of blocks
Views: 10292 Matt Thomas
Extracting data from the bitcoin blockchain
 
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In this video, we will take the output of a blockparser and use linux tools to extract specific data like addresses, blockhashes and merkleroots. We will also learn that some wallets take Bitcoin addresses, hash them with SHA 256 and use the result as a private key and transfer bitcoin to the corresponding addresses. Crazy Stuff! Links: How to install and run a Blockparser for the Bitcoin Blockchain? https://youtu.be/1uDc8OYPJwk https://github.com/gcarq/rusty-blockparser https://www.bitaddress.org https://blockchain.info/ Sample data from the Bitcoin Blockchain: https://github.com/cevahir/bitcoin Commands: $ echo -n 1NiNja1bUmhSoTXozBRBEtR8LeF9TGbZBN | sha256sum $ head tx_out-0-*.csv > text.csv $ awk -F “;” ‘{print $5}’ test.csv > test_addresses.txt $ head blocks-0-*.csv | awk -F “;” ‘{print $1}’ $ head blocks-0-*.csv | awk -F “;” ‘{print $6}’ $ awk -F “;” ‘{print $5}’ tx_out-0-*.csv > addresses.txt
Views: 367 Coding with Canbo
Dissecting a P2PKH Bitcoin Transaction down to the last Byte
 
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We aim to understand how bitcoin nodes validate a bitcoin transaction by concatenation of output and input scripts . Therefor we analyze the format of Bitcoin transaction. This is needed to prepare a future video about Revocable Sequence Maturity contracts which are need for the construction of payment channels in the lightning network. I will appreciate the kindness if you leave a (small!) tip. BTC-address: 1KwjU4UknzbXh1rnP1jAKz9wwjcuYwe9AC segwit: 38fWwbsxvVeBsJpH4bbHTBai8jT8RUa7DE Leave an even more anonymous tip via the ⚡ Lightning ⚡ network (: Get the invoice with this curl statement: curl -i -H "Accept: application/json" -d '{"amount":ENTER_AN_INTEGER_AMOUNT_OF_SATOSHIS_INSTEAD_OF_THIS}' https://ln.rene-pickhardt.de/invoice Big thanks to Fulmo from Berlin for previous support of my work! My web site: https://www.rene-pickhardt.de and Twitter: https://twitter.com/renepickhardt as well as my lightning node: https://ln.rene-pickhardt.de Useful links and tools: * https://en.bitcoin.it/wiki/Transaction * https://wschae.github.io/build/editor.html (tool for executing bitcoin scripts) * http://lenschulwitz.com/base58 * https://en.bitcoin.it/wiki/Base58Check_encoding Evaluated Bitcoin transaction: https://www.blockchain.com/btc/tx/45bf99a6d2caa6fe092cdb77d9fd3364ada30133c7c8d01e86eaf10682168d70 Version: 01000000 Input counter: 01 ⇨ 1 input script TxOutHash: 2ad07447509a4fa9f3b45d3bde74b774b46b569dfa1d0728120c355b7b26312f Hash of the spent transaction (we need this later) 2a d0 74 47 50 9a 4f a9 f3 b4 5d 3b de 74 b7 74 b4 6b 56 9d fa 1d 07 28 12 0c 35 5b 7b 26 31 2f 2f31267b5b350c1228071dfa9d566bb474b774de3b5db4f3a94f9a504774d02a (this transaction was being spent) TxOut index: 00000000 (first output in the output of previous tx) Script length: 6a ⇨ 6*16 + 10 = 106 Bytes ⇨ 212 hex digits Input script:473044022100edf664ebfc12a3998d242fbdd8a1a44c13e4e7f6d7dbddde9ae5610bfd2c9c38021f74ec1e2eca7310baa17c60cbaaffa0503cee680f13fd9a10fd04f2910958c9012103486669962008e0713660b6d69117a65fcecd221d06c1e5077b4d9cd477c0cf98 Sequence: feffffff Dissect the input Length for data: 47 ⇨ hex2dec: 71 Bytes ⇨ 142 chars: signature: 3044022100edf664ebfc12a3998d242fbdd8a1a44c13e4e7f6d7dbddde9ae5610bfd2c9c38021f74ec1e2eca7310baa17c60cbaaffa0503cee680f13fd9a10fd04f2910958c901 Length for pub key: 21 ⇨ hex2dec: 33 Bytes ⇨ 66 chars pubkey: 03486669962008e0713660b6d69117a65fcecd221d06c1e5077b4d9cd477c0cf98 Check the bitcoin address from the input: RIPMED160(SHA256(pubkey)): CB226B9CC60C613DDDCB188E984F631764CEF143 Extend with version: 00CB226B9CC60C613DDDCB188E984F631764CEF143 Calculate checksum: SHA256(SHA256(extended Pubkey)): CE281C015A7230F46041D2DD640A6714725C25A0ED674D5E215318AA206A397F Checksum = first 4 Bytes: CE281C01 Address in hex: 00CB226B9CC60C613DDDCB188E984F631764CEF143CE281C01 Encode to base58: 1KwjU4UknzbXh1rnP1jAKz9wwjcuYwe9AC Output: 02102700000000000017a9144c8045932c5a4e57316e6e9c465fc1fba32d6ac38768380000000000001976a9144f6d76f02a5553617ec71820e9036afdcbf7d93c88ac693b0800 Do the same over again but only for the outputs: 01000000 01 911d280701fbaa08cd97646f5c3483284b4f37afeff3bf71f2b580063399bed5 2a000000 6a47304402202eada36986b14698473e34ace8a830725c39c5d3b2d8c5ccc39562758cd2c15c02205574c0d0b4a472ffee99696f2ead63e4c3a3ef9a35c9f71268542849e1721b0d0121031f64ef992820346838522cfa0babafc2638540ed58f9521e70ec0aa66c3bd709 feffffff Spent Output: (at the time of the tx of course unspent): #outputs: 02 ⇨ 2 Outputs: a861000000000000 ⇨ endian 61a8 ⇨ hex2dec: 25000 (Satoshi) Length: 19 ⇨ hex2dec = 25 Bytes ⇨ 50 hex digits: 76 ⇨ OP_DUP a9 ⇨ OP_HASH160 Length: 14 ⇨ hex2dec = 20 Bytes ⇨ 40 digits: Pubkey Hash: cfcc2ce2d8fc82b2b0837b6c1775d5edcffc107f 88 ⇨ OP_EQUALVERIFY ac ⇨ OP_CHECKSIG 50103b0000000000 ⇨ 3b1050 ⇨ hex2dec = 3870800 (change!) Length: 19 76 ⇨ OP_DUP a9 ⇨ OP_HASH160 Length: 14 Data: Pubkey Hash: 3828a52a8d8310c63581ab1fcbf418bffaf23e3a (change address pubkey) 88 ⇨ OP_EQUALVERIFY ac ⇨ OP_CHECKSIG Timelock: 91250800 final script which needs to be true so that the Transaction can be minded: 3044022100edf664ebfc12a3998d242fbdd8a1a44c13e4e7f6d7dbddde9ae5610bfd2c9c38021f74ec1e2eca7310baa17c60cbaaffa0503cee680f13fd9a10fd04f2910958c901 03486669962008e0713660b6d69117a65fcecd221d06c1e5077b4d9cd477c0cf98 OP_DUP OP_HASH160 cfcc2ce2d8fc82b2b0837b6c1775d5edcffc107f OP_EQUALVERIFY OP_CHECKSIG This script needs to evaluate true! Enter it to: https://wschae.github.io/build/editor.html
Views: 940 René Pickhardt
Use Blockchain API to Calculate Time Until Next Bitcoin Block Halving
 
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BTC: 1NPrfWgJfkANmd1jt88A141PjhiarT8d9U Using PHP cURL and Blockchain API. Written tutorial: http://blog.blockchain.com/2015/11/18/using-the-blockchain-api-to-determine-the-time-left-until-the-next-bitcoin-block-halving/
Views: 599 m1xolyd1an
How Bitcoin Works in 5 Minutes (Technical)
 
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A short introduction to how Bitcoin Works. Want more? Check out my new in-depth course on the latest in Bitcoin, Blockchain, and a survey of the most exciting projects coming out (Ethereum, etc): https://app.pluralsight.com/library/courses/bitcoin-decentralized-technology Lots of demos on how to buy, send, store (hardware, paper wallet). how to use javascript to send bitcoin. How to create Ethereum Smart Contract, much more. Written Version: http://www.imponderablethings.com/2014/04/how-bitcoin-works-in-5-minutes.html Less technical version: https://www.youtube.com/watch?v=t5JGQXCTe3c Donation address: 1K7A6wsyxj6fThtMYcNu6X8bLbnNKovgtP Germain caption translation provided by adi331 : 19s6rqRfHa19w7wcgwtCumPs1vdLDj1VVo (thanks!!)
Views: 5666299 CuriousInventor
Learning Bitcoin 4 - Bitcoin Code Exploration - Block - Part 1
 
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Learning Bitcoin 4 - Bitcoin Code Exploration - Block - Part 1
Views: 722 Experience&Embrace
George Hotz | Programming | sending a transaction with BITCOIN CASH from SCRATCH part1
 
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Date of stream 16 Oct 2018. Live-stream chat added as Subtitles/CC - English (Twitch Chat). Stream title: sending a transaction with BITCOIN CASH from SCRATCH Video archive: - https://youtube.com/commaaiarchive/playlists Source files: - https://github.com/geohot/twitchcoins Follow for notifications: - https://twitch.tv/georgehotz Subscribe to support: - https://twitch.tv/products/tomcr00s3_3000 - https://twitch.tv/products/georgehotz_3000 We archive George Hotz videos for fun. Follow for notifications: - https://twitter.com/commaaiarchive We are not affiliated with comma.ai. Official communication channels: - https://comma.ai - https://twitter.com/comma_ai - https://pscp.tv/comma_ai - https://github.com/commaai - https://discord.comma.ai - https://community.comma.ai - https://comma.ai/jobs - https://comma.ai/shop
Views: 65398 commaai archive
How Bitcoin Mining Work's
 
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What is Bitcoin https://www.youtube.com/watch?v=WDvskHePAXU How to Mine Bitcoin https://www.youtube.com/watch?v=79KEJf4qmps How Bitcoin Mining Works Bitcoin Mining Works by Making a hash of it You can also watch my other video on Home to Mine Bitcoins ( Link is in Description ) This general ledger is a long list of blocks, known as the 'blockchain'. It can be used to explore any transaction made between any bitcoin addresses, at any point on the network. Whenever a new block of transactions is created, it is added to the blockchain, creating an increasingly lengthy list of all the transactions that ever took place on the bitcoin network. A constantly updated copy of the block is given to everyone who participates, so that they know what is going on. When a block of transactions is created, miners put it through a process. They take the information in the block, and apply a mathematical formula to it, turning it into something else. That something else is a far shorter, seemingly random sequence of letters and numbers known as a hash. This hash is stored along with the block, at the end of the blockchain at that point in time. Hashes have some interesting properties. It’s easy to produce a hash from a collection of data like a bitcoin block, but it’s practically impossible to work out what the data was just by looking at the hash. And while it is very easy to produce a hash from a large amount of data, each hash is unique. If you change just one character in a bitcoin block, its hash will change completely. Miners don’t just use the transactions in a block to generate a hash. Some other pieces of data are used too. One of these pieces of data is the hash of the last block stored in the blockchain. Because each block’s hash is produced using the hash of the block before it, it becomes a digital version of a wax seal. It confirms that this block – and every block after it – is legitimate, because if you tampered with it, everyone would know. If you tried to fake a transaction by changing a block that had already been stored in the blockchain, that block’s hash would change. If someone checked the block’s authenticity by running the hashing function on it, they’d find that the hash was different from the one already stored along with that block in the blockchain. The block would be instantly spotted as a fake. Because each block’s hash is used to help produce the hash of the next block in the chain, tampering with a block would also make the subsequent block’s hash wrong too. That would continue all the way down the chain, throwing everything out of whack. Competing for coins Butterfly Labs Bitforce mining rigSo, that’s how miners ‘seal off’ a block. They all compete with each other to do this, using software written specifically to mine blocks. Every time someone successfully creates a hash, they get a reward of 25 bitcoins, the blockchain is updated, and everyone on the network hears about it. That’s the incentive to keep mining, and keep the transactions working. The problem is that it’s very easy to produce a hash from a collection of data. Computers are really good at this. The bitcoin network has to make it more difficult, otherwise everyone would be hashing hundreds of transaction blocks each second, and all of the bitcoins would be mined in minutes. The bitcoin protocol deliberately makes it more difficult, by introducing something called ‘proof of work’. The bitcoin protocol won’t just accept any old hash. It demands that a block’s hash has to look a certain way; it must have a certain number of zeroes at the start. There’s no way of telling what a hash is going to look like before you produce it, and as soon as you include a new piece of data in the mix, the hash will be totally different. Miners aren’t supposed to meddle with the transaction data in a block, but they must change the data they’re using to create a different hash. They do this using another, random piece of data called a ‘nonce’. This is used with the transaction data to create a hash. If the hash doesn’t fit the required format, the nonce is changed, and the whole thing is hashed again. It can take many attempts to find a nonce that works, and all the miners in the network are trying to do it at the same time. That’s how miners earn their bitcoins. Please like share and comment on our Video For more videos Subscribe our Channel Also Follow us on Facebook : https://www.facebook.com/Tech.Solution001 Google+ : https://plus.google.com/113358335751493798275 Twitter : Instagram : Our Website Address : Subscribe our channel for more Videos
Views: 25 Tech Land
Bitcoin: Confirming the Genesis Block
 
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A little bit different of a video today. A lot of people have been talking about cryptocurrencies this year so I figured I would make a video about how the blockchain works for bitcoin. For anyone interested in the code, here is the repo: https://github.com/ImportMathRepositories/Bitcoin_Block_Confirmation If you're curious where you can find realtime blockchain data, this is a pretty good resource: https://blockexplorer.com/ If you have any questions, feel free to leave a comment. If you enjoyed the video, don't forget to like, share, and subscribe!
Views: 971 Import Math
Blockchain 101 - A Visual Demo
 
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This is a very basic visual introduction to the concepts behind a blockchain. We introduce the idea of an immutable ledger using an interactive web demo. Part 2 is here: https://youtu.be/xIDL_akeras If you are interested in playing with this on your own, it is available online at: http://anders.com/blockchain/ The code that runs this demo is also on GitHub: https://github.com/anders94/blockchain-demo I'm @anders94 on Twitter and @andersbrownworth on Steemit. Donations: BTC: 1K3NvcuZzVTueHW1qhkG2Cm3viRkh2EXJp ETH: 0x84a90e21d9d02e30ddcea56d618aa75ba90331ff ETC: 0xab75ad757c89fa33b92090193a797e6700769ef8
Views: 946709 Anders Brownworth
What Bitcoin Miners Actually Do
 
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Blockchain explorers: blockchain.info, blockr.io, blockexplorer.com To do a SHA 256 on a string of text: http://www.xorbin.com/tools/sha256-hash-calculator To do a SHA 256 on a file: https://md5file.com/calculator My Medium Post that I used to make this video: https://medium.com/@TheAlexGalaxy/what-bitcoin-miners-actually-do-bc80185c0e52#.91ac9ld9h
Views: 102385 Alex Millar
Blockchain/Bitcoin for beginners 7: Blockchain header: Merkle roots and SPV transaction verification
 
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How are transactions stored (and recorded) in the Blockchain blocks? Using a concept called a Merkle tree - in this video I break it down in depth with a simple example and show how a SPV node (Simple Payment Verification) node that does not keep a full copy of the blockchain transaction history - just the headers of the blocks - can verify from an adjacent (but not necessarily trusted) full node, which block a transaction is part of just from knowing the MERKLE PATH from the full node. http://chimera.labs.oreilly.com/books/1234000001802/ch07.html
Views: 12687 Matt Thomas
Tracking Bitcoin Transactions on the Blockchain - SANS DFIR Summit 2017
 
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Bitcoins are a commonly-used currency among cyber criminals for exchanging goods and services and receiving payments from ransomware. While cryptocurrency claims to promote anonymity, the nature of the blockchain’s public ledger means that criminal activities can be traced and correlated. This presentation will cover a brief high-level overview of how transactions on the blockchain work and will focus on how to apply this knowledge in order to both manually and automatically map out transactions, associate bitcoin addresses, and identify potential cybercriminal-owned bitcoin wallets with the goal of providing context to the scale and duration of a campaign impacting your enterprise. Examples will include identifying a Locky affiliate’s infrastructure, attributing the Shark/Atom ransomware, and identifying “bitcoin exchanges” on the blockchain. Kevin Perlow, Associate, Booz Allen Hamilton
BitCoin কী ? সম্পূর্ণ Detail Video | Block Chain | Mining & Miners | Future of Bitcoins ? TB
 
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নমস্কার বন্ধুরা, আজ আমরা এই Video -র মাধ্যমে জানব BitCoin সম্পকে। Bitcoin in detail, bitcoin mining in india, bitcoin explaination, bitcoin in bengali, bitcoin miner, bitcoin Cash, bitcoin trading. ● LIKE ● ---- ● SHARE ● ---- ● SUBSCRIBE ● ◄ Subscribe (এটা Free)► https://goo.gl/uq4Gbn -------------------------------------------------------- ► Tech রহস্য -র Video প্রতি শনিবার 9pm (Saturday) - https://www.youtube.com/playlist?list=PLgga8_qY4fkP1eQJ1WU7Tmk-ufwJZTlWJ ► Top 5 Videos (Tech রহস্য) - ● [Tech রহস্য - #5] - Hacking and Hackers কি বা কারা ? - https://www.youtube.com/edit?o=U&video_id=UQ0hTmriKa8 ● [Tech রহস্য - #4] - "Aliens" কি সত্যিই আাছে ? Video Proof - https://www.youtube.com/edit?o=U&video_id=UQ0hTmriKa8 ● [Tech রহস্য - #3] - Internet -এর কিছু অজানা রহস্য | - https://www.youtube.com/edit?o=U&video_id=MzbxcohUNcw ● [Tech রহস্য - #2] - সত্যিই কি ভূত আছে নাকি নেই | Ghost ? - https://www.youtube.com/edit?o=U&video_id=sWOkzX3glhU ● [Tech রহস্য - #1] - ভগবান কি সত্যিই আছে না নেই | God ? - https://www.youtube.com/edit?o=U&video_id=UQ0hTmriKa8 --------------------------------------------------------- ► Follow Me ► --------------------------------------------------------- ● Facebook - https://www.facebook.com/TechnicalBondhu/ ● Twitter - https://twitter.com/TechnicalBondhu ● G+ - https://goo.gl/9kbZBq ----------------------------------------------------------
Views: 333 Technical Bondhu
Blockchain tutorial 6: Digital signature
 
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This is part 6 of the Blockchain tutorial explaining what a digital signature is. In this video series different topics will be explained which will help you to understand blockchain. Bitcoin released as open source software in 2009 is a cryptocurrency invented by Satoshi Nakamoto (unidentified person or group of persons). After the introduction of Bitcoin many Bitcoin alternatives were created. These alternate cryptocurrencies are called Altcoins (Litecoin, Dodgecoin etc). Bitcoin's underlying technology is called Blockchain. The Blockchain is a distributed decentralized incorruptible database (ledger) that records blocks of digital information. Each block contains a timestamp and a link to a previous block. Soon people realises that there many other use cases where the Blockchain technology can be applied and not just as a cryptocurrency application. New Blockchain platforms were created based on the Blockchain technology, one of which is called Ethereum. Ethereum focuses on running programming code, called smart contracts, on any decentralized application. Using the new Blockchain platforms, Blockchain technology can be used in supply chain management, healthcare, real estate, identity management, voting, internet of things, etcetera, just to name a few. Today there is a growing interest in Blockchain not only in the financial sector but also in other sectors. Explaining how Blockchain works is not easy and for many the Blockchain technology remains an elusive concept. This video series tries to explain Blockchain to a large audience but from the bottom up. Keywords often used in Blockchain conversation will be explained. Each Blockchain video is short and to the point. It is recommended to watch each video sequentially as I may refer to certain Blockchain topics explained earlier. Check out all my other Blockchain tutorial videos https://goo.gl/aMTFHU Subscribe to my YouTube channel https://goo.gl/61NFzK The presentation used in this video tutorial can be found at: http://www.mobilefish.com/developer/blockchain/blockchain_quickguide_tutorial.html #mobilefish #blockchain #bitcoin #cryptocurrency #ethereum
Views: 16459 Mobilefish.com
How does a blockchain work - Simply Explained
 
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What is a blockchain and how do they work? I'll explain why blockchains are so special in simple and plain English! 💰 Want to buy Bitcoin or Ethereum? Buy for $100 and get $10 free (through my affiliate link): https://www.coinbase.com/join/59284524822a3d0b19e11134 📚 Sources can be found on my website: https://www.savjee.be/videos/simply-explained/how-does-a-blockchain-work/ 🐦 Follow me on Twitter: https://twitter.com/savjee ✏️ Check out my blog: https://www.savjee.be ✉️ Subscribe to newsletter: https://goo.gl/nueDfz 👍🏻 Like my Facebook page: https://www.facebook.com/savjee
Views: 2744344 Simply Explained - Savjee
Blockchain 101 Ep 24 - How to mine Bitcoin
 
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Bitcoin is produced through mining. Every 10 minutes, miners compete to solve a complex math problem. Whoever finds the answer first, mines the block, and receives Bitcoins as a block reward. In early days, mining can be done using CPUs. However, with the increasing number of miners, CPUs are no longer powerful enough to mine Bitcoins, and people turned to mining rigs. To start mining, you need to prepare mining rigs, Bitcoin address, mining software, etc. Currently, the computing power required is too high, solo miners find it hard to get a block reward. Hence, many miners join a mining pool to do it together, miners are only responsible for providing the computing power, and the mining pool processes the transactions. When the pool receives Bitcoins, it will distribute to miners based on their contributions ensuring a stable rate of return. Watch the video here! Huobi Pro will post a question in our Tweet via our Twitter account (https://twitter.com/Huobi_Pro) each time we put up an episode of Blockchain 101 post on our Twitter account, we will randomly select 20 people who answered in the format [UIDxxxxxxxx, correct answer] and retweet our post will be entitled to 1 HT each. Note that the UID entered MUST be a valid Huobi registered account. What are you waiting for? Fastest fingers first! Grab your HT now!
Views: 719 Huobi Global
What is Bitcoin Mining?
 
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For more information: https://www.bitcoinmining.com and https://www.weusecoins.com What is Bitcoin Mining? Have you ever wondered how Bitcoin is generated? This short video is an animated introduction to Bitcoin Mining. Credits: Voice - Chris Rice (www.ricevoice.com) Motion Graphics - Fabian Rühle (www.fabianruehle.de) Music/Sound Design - Christian Barth (www.akkord-arbeiter.de) Andrew Mottl (www.andrewmottl.com)
Views: 6764508 BitcoinMiningCom
Blockchain 101 Ep 11 - Why haven't we finished mining Bitcoins
 
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For sustainability, the Bitcoin network adjusts its mining difficulty. Every 10 minutes, miners compete to solve a complex math problem to create the next block for Bitcoin rewards. If the processing power of the Bitcoin network keeps increasing, we will finish mining all Bitcoins in no time. To maintain the rate of new block generation at once every 10 minutes, Satoshi Nakamoto has designed the system to adjust the mining difficulty every two weeks, every 2016 blocks. As such, the adjusted difficulty will keep the new block generation rate at the expected time frame of 10 minutes. Currently, the difficulty is set at 480PH/s, about 68 billion times harder than mining the genesis block. That means, based on the current computing power, all miners need to perform 300 sextillion(3*10^23)hashes to find the right answer to mine the new block. Watch the video here! Huobi Pro will post a question in our Tweet via our Twitter account (https://twitter.com/Huobi_Pro) each time we put up an episode of Blockchain 101 post on our Twitter account, first 20 people who answered in the format [UIDxxxxxxxx, correct answer] and retweet our post will be entitled to 1 HT each. Note that the UID entered MUST be a valid Huobi registered account. What are you waiting for? Fastest fingers first! Grab your HT now!
Views: 1086 Huobi Global
What is a Bitcoin Transaction?
 
06:37
In this video I explain what a Bitcoin transaction is, what the contents of a Bitcoin transaction are and I present an example of sending and receiving bitcoins. Featuring content a sample lesson taken from the Bitcoin Advanced Level: Transactions course from Blockchain Institute of Technology (https://BlockchainInstituteofTechnology.com) at: https://courses.blockchaininstituteoftechnology.com/courses/bitcoin-advanced-transactions Sign up to receive George Levy's FREE email newsletter and a video email course on blockchain, Bitcoin and cryptocurrency ($47 Value yours free) at: https://GeorgeLevy.com/Free Special offer for George Levy channel viewers, open your own Bitcoin wallet for Free and get $10 bonus in Bitcoin: https://blockchaininformer.com/btcwallet
Views: 2067 George Levy
Python Bitcoin Tutorial for Beginners
 
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My Book: https://www.amazon.com/Building-Bitcoin-Websites-Beginners-Development/dp/153494544X A simple introduction tutorial to get started with the pybitcointools Python library. https://github.com/vbuterin/pybitcointools
Views: 57787 m1xolyd1an
Bitcoin ke unconfirmed transaction confirm  kaise kare !!
 
05:11
blockchain.info/pushtx https://blockchain.info/tx/3db1e8d36e6a070cc33f6f4c034a816ed92e50cef41f2e172e2cd173a2963db7?format=hex https://live.blockcypher.com/btc/pushtx/ https://pool.viabtc.com/tools/BTC/broadcast/
Views: 221 ONLINE SUPPORT
Blockchain 101 Ep 12 - How does Bitcoin control its supply
 
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Bitcoin is a virtual currency designed for deflation, with total supply cap of 21 million. Why? When designing Bitcoin, Satoshi set each Bitcoin to be divisible to 0.00000001. The block reward was 50 Bitcoins, and such reward will be halved every 210,000 blocks. If a new block is generated every 10 minutes, it will take around four years to mine 210,000 blocks. Since 2009, the block reward has been halved twice, the block reward is currently 12.5 Bitcoins. Around Year 2045, 99.95% of Bitcoins will be issued, and the last Bitcoin would be mined in the year 2140, reaching the total supply of 21 million. (Note: The actual figure is 20999999.97690000) The fundamental soundness of Bitcoin’s deflationary nature has caused quite a debate among economists, but this mechanism has encouraged miners to start sooner than later, which provides processing power and security to the network. Watch the video here! Huobi Pro will post a question in our Tweet via our Twitter account (https://twitter.com/Huobi_Pro) each time we put up an episode of Blockchain 101 post on our Twitter account, first 20 people who answered in the format [UIDxxxxxxxx, correct answer] and retweet our post will be entitled to 1 HT each. Note that the UID entered MUST be a valid Huobi registered account. What are you waiting for? Fastest fingers first! Grab your HT now!
Views: 1218 Huobi Global
(Audiobook) The Original Bitcoin White Paper by Satoshi Nakamoto
 
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Donations greatly appreciated! Bitcoin: 1KdkeDArSd5LVaLVh9WePaHqB9yHLaKPfv I worked very hard to create this interactive audiobook format and graciously appreciate Bitcoin donations. After wanting to read the original Bitcoin Whitepaper, I discovered there wasn't a good audiobook version of it with graphs and formulas. So I went ahead and made it, using a slower reading speed so a viewer can try and take it all in. I have no affiliation with bitcoin.org or Satoshi Nakamoto. Download the original whitepaper here. http://bitcoin.org/bitcoin.pdf From wikipedia.... In November 2008, a paper was posted on the internet under the name Satoshi Nakamoto titled Bitcoin: A Peer-to-Peer Electronic Cash System. This paper detailed methods of using a peer-to-peer network to generate what was described as "a system for electronic transactions without relying on trust". In January 2009, the Bitcoin network came into existence with the release of the first open source Bitcoin client and the issuance of the first bitcoins, with Satoshi Nakamoto mining the first block of bitcoins ever (known as the "genesis block"), which had a reward of 50 bitcoins. The value of the first bitcoin transactions were negotiated by individuals on the bitcointalk forums with one notable transaction involving a 10,000 BTC pizza. "Satoshi Nakamoto" is a pseudonym for the unknown person or people who designed the original Bitcoin protocol in 2008 and launched the network in 2009. Nakamoto was responsible for creating the majority of the official Bitcoin software and was active in making modifications and posting technical information on the BitcoinTalk Forum.[73] I apologize in advance for the few wording mistakes. I tried to notate most of them.
Views: 42112 Bitcoin WhitePaper
Blockchain - How To Verify A Bitcoin Transaction And Get Your Hash ID
 
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For more tips like these visit http://bodymindsuccess.com/bitcoin or subscribe to our channel
Views: 57675 Crypto Currency Wealth
Blockchain 101 Ep 23 - What is mining?
 
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Mining is validating transactions initiated in the Bitcoin network within a timeframe, updating and adding new blocks on the blockchain. Those who mine are called miners. Simply put, mining is a bookkeeping process where miners are the bookkeepers and blockchain is the ledger. What motivates miners to keep mining? Bitcoin adopts a “distributed updated system” where every miner competes for the right to update the ledger. The one who gets to update the ledger in the new block will receive newly generated Bitcoins as a reward. Therefore, mining generates Bitcoins. Initially, Satoshi designed the system such that after every 210,000 blocks, the Bitcoin block reward will be halved, until it reaches the smallest fraction of one Bitcoin. Hence, Bitcoin has a supply cap, similar to gold. Hence, people often call Bitcoin “digital gold” and its creation process, “mining”. Watch the video here! Huobi Pro will post a question in our Tweet via our Twitter account (https://twitter.com/Huobi_Pro) each time we put up an episode of Blockchain 101 post on our Twitter account, we will randomly select 20 people who answered in the format [UIDxxxxxxxx, correct answer] and retweet our post will be entitled to 1 HT each. Note that the UID entered MUST be a valid Huobi registered account. What are you waiting for? Fastest fingers first! Grab your HT now!
Views: 736 Huobi Global
Bitcoin The ONE Thing YOU Must Know! February 2019 Price Prediction, News & Trade Analysis
 
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***My fully comprehensive road map to becoming a COMPLETE Trading Boss! + VIP DIscord Access*** https://krown-trading.teachable.com/p/trade-like-a-professional-the-art-and-application-of-technical-analysis/ All my trading strategies revealed in a series of 39 Modules of Video and PowerPoint presentation format over 32 hours long + Bonus Material! Reviews inside! ***Master Your Options*** - https://krown-trading.teachable.com/p/master-your-options/ - Years as a Professional Market Maker Authorized Trader synthesized down into a 42 Module Road Map for the Purpose of Derivative Domination ***Krown Jewel Indicator Mastery*** https://krown-trading.teachable.com/?affcode=236462_6ozjtirq My preferred method of scalping by timing both entries and exits with 5 unique oscillators each suited for specific trading styles Complimentary 10% off trading fees for Deribit ***https://www.deribit.com/reg-1170.7653*** Complimentary 10% off trading fees for BitMEX https://www.bitmex.com/register/4l6ovV ***Cave Discord*** https://discord.gg/5Zwuum8 ***Digital Den*** https://discord.gg/CsvbmDQ Please do consider gently tapping the like & subscribe button as I update my thoughts on the market daily! ***Complimentary Portfolio Tracking and Balancing Tool*** https://docs.google.com/spreadsheets/d/1Y8WtgxCZen4yt8UwAmqxQjfDR42-kFQ8iRx_3rJi0CI/edit#gid=1158545460 If you feel so inclined to support my Coffee and Ground Beef diet then here is a link to my BTC address - 3QnMhH3QKjoNMprArJ2PyY2t8MWPCDtmJv Recommended Reading for Learning the Art of Trading - Technical Analysis and Stock Market Profits https://amzn.to/2qQAz7A Reminiscences of a Stock Operater https://amzn.to/2F3WD3G Also checkout my Steemit Account as I do post exclusive content here - https://steemit.com/@realcrowncrypto Twitter for Intra-day Mini Update - https://twitter.com/KrownCryptoCave #Bitcoin #BitcoinNews #BitcoinAnalysis Disclaimer - The content in this video and on this channel are not intended to be financial advice. The content in this video and on this channel are only intended for entertainment purposes only! Bitcoin Analysis, Top bitcoin analysis, price prediction, Bitcoin Trading, Bitcoin 2018, Bitcoin Crash, Bitcoin Moon, Bitcoin News, Bitcoin Today, Best Bitcoin Analysis, Bitcoin price, Bitcoin to 0, Where is Bitcoin Going, Bitcoin bottomed
Views: 4570 Krown's Crypto Cave
Blockchain/Bitcoin for beginners 3: public/private keys, signatures... and first ever transaction
 
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Detailed overview of public/private key encryption and live demo of exactly how digital signatures work on Mac, combining public and private keys and hash functions. Welcome to episode 3 of my series on Blockchain/Bitcoin. I'm joined once again by my girlfriend Nadisha who is my classroom pupil... I build on the hash function concepts from the previous episode and explain the basic concepts public and private keys and how to use them to create digital signatures - a key part of the bitcoin infrastructure. We demonstrate in a Mac terminal how you can generate your own keys and encrypt and decrypt and sign your own resources - learning by doing always works. We touch on bitcoin addresses, what they represent and how they are created. Finally I go back for a refresh of the bitcoin blockchain browser and look at the first ever bitcoin transaction in the "Genesis Block" to show what a real bitcoin address looks like. Bitcoin Blockchain browser https://blockchain.info Online hash calculator - great way to practice and familiarise with hash functions - one of the most important building blocks of Blockchain/Bitcoin http://www.fileformat.info/tool/hash.htm Course to date (previous videos) 1. Blockchain introduction https://youtu.be/xwA2TkcAQgQ 2. Hashing, blockchain networks and look at blockchain browser https://youtu.be/oxwMnqFNq9M SAMPLE COMMANDS: You will need to use your own document - pick any document, obviously your hash values will be different to mine. Also I had to use (right arrow) - since comments do not allow "chevron" symbols # EXAMPLE 1: # generate public and private keys openssl genrsa -out mykey 2048; cp mykey privatekey; openssl rsa -in mykey -pubout -out publickey; rm mike #encrypt with public key echo “the cat sat on the mat” | openssl rsautl -encrypt -pubin -inkey publicly (right arrow) cipher.txt # show the garbage cat cipher.txt # decrypt with private key - The cat sat on the mat cat cipher.txt | openssl rsautl -decrypt -inkey privately # EXAMPLE 2: Sign Alice in wonderland #check the SHA256 hash of the document to send - d9db7b8984d808b2821070cc6cc76e4415229d3356452b2a0f06ec3608f13b6c shasum -a 256 alice-in-wonderland.txt | cut -d" " -f1 # create a text file called signature which hashes the document and encrypts with private key shasum -a 256 alice-in-wonderland.txt | cut -d" " -f1 | openssl rsautl -inkey privatekey -sign (right arrow) signature # wrap the signature up with the public key, the document and the signature and send it … we just copy to another folder tar -cvf alice.tar signature alice-in-wonderland.txt publickey;mkdir -p inbox;cp alice.tar inbox;cd inbox;tar -xvf alice.tar # inspect the public key and verify with the sender that it belongs to the sender cat publickey #decrypt the signature with the received public key - d9db7b8984d808b2821070cc6cc76e4415229d3356452b2a0f06ec3608f13b6c openssl rsautl -inkey publickey -pubin -in signature # hash the received document - d9db7b8984d808b2821070cc6cc76e4415229d3356452b2a0f06ec3608f13b6c shasum -a 256 alice-in-wonderland.txt | cut -d" " -f1 # if they are both the same then the document cannot have been changed since it was signed by the genuine owner of the # private key corresponding to the public key
Views: 19929 Matt Thomas
Blockchain: Massively Simplified | Richie Etwaru | TEDxMorristown
 
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Richie Etwaru, discusses the opportunity and implications of blockchain as a paradigm to slow/chose the expanding trust gap in commerce. He unpacks blockchain to a level of simplicity to be consumed by those that are just starting to understand and explore the paradigm. He lays out a current state of commerce, suggesting that every company is currently at risk of being disrupted or incurring severe strain from a blockchain version of itself. Professionally, Richie Etwaru is a c-level at a Fortune 500 Company, an author, the owner of international patents, the founder of multiple ventures, an experienced keynote speaker, an angel investor, a member of advisory boards, and a recognized thought leader in the area of digital, technology, and design. Specific to this TEDx talk, Richie is an adjunct professor of blockchain management at Syracuse University in New York, he has delivered over 100 blockchain keynotes across the world, he has written well read blockchain blogs, he has been interviewed on blockchain in online TV shows, and has advised governments and venture funds on blockchain opportunities. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx
Views: 1186285 TEDx Talks
Blockchain tutorial 27: Bitcoin raw transaction and transaction id
 
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This is part 27 of the Blockchain tutorial. This tutorial explains: - What Bitcoin raw transaction is. - Shows an example of a raw transaction using the very first transaction on the Genesis block. - What the difference is between big endian and little endian. - What a satoshi is. - What a Bitcoin transaction id or hash is and what its purpose is. - How to calculate the transaction id. In this video series different topics will be explained which will help you to understand blockchain. Bitcoin released as open source software in 2009 is a cryptocurrency invented by Satoshi Nakamoto (unidentified person or group of persons). After the introduction of Bitcoin many Bitcoin alternatives were created. These alternate cryptocurrencies are called Altcoins (Litecoin, Dodgecoin etc). Bitcoin's underlying technology is called Blockchain. The Blockchain is a distributed decentralized incorruptible database (ledger) that records blocks of digital information. Each block contains a timestamp and a link to a previous block. Soon people realises that there many other use cases where the Blockchain technology can be applied and not just as a cryptocurrency application. New Blockchain platforms were created based on the Blockchain technology, one of which is called Ethereum. Ethereum focuses on running programming code, called smart contracts, on any decentralized application. Using the new Blockchain platforms, Blockchain technology can be used in supply chain management, healthcare, real estate, identity management, voting, internet of things, etcetera, just to name a few. Today there is a growing interest in Blockchain not only in the financial sector but also in other sectors. Explaining how Blockchain works is not easy and for many the Blockchain technology remains an elusive concept. This video series tries to explain Blockchain to a large audience but from the bottom up. Keywords often used in Blockchain conversation will be explained. Each Blockchain video is short and to the point. It is recommended to watch each video sequentially as I may refer to certain Blockchain topics explained earlier. Check out all my other Blockchain tutorial videos https://goo.gl/aMTFHU Subscribe to my YouTube channel https://goo.gl/61NFzK The presentation used in this video tutorial can be found at: http://www.mobilefish.com/developer/blockchain/blockchain_quickguide_tutorial.html The 3 links mentioned in the video are: - The bitcoin_genesis_raw_tx.txt file http://www.mobilefish.com/download/cryptocurrency/bitcoin_genesis_raw_tx.txt - The Bitcoin protocol: https://en.bitcoin.it/wiki/Protocol_documentation#tx - The block explorer used in the video: https://blockchain.info/ The python script to calculate the transaction id: http://www.mobilefish.com/download/cryptocurrency/calculate_txid.py.txt The brainwallet tool to convert the raw transaction into a more readable text: http://www.mobilefish.com/services/cryptocurrency/brainwallet.html #mobilefish #blockchain #bitcoin #cryptocurrency #ethereum
Views: 5852 Mobilefish.com
Blockchain 101 Ep 16 - What's the fee for Bitcoin transactions?
 
01:07
Bitcoin transaction fees give Bitcoin miners an incentive to include transactions into their blocks and provide sufficient hashing power, securing the Bitcoin network. Some also call it “miner fees”. When making a transaction over the Bitcoin network, one usually pays for miners to facilitate the transaction. The fee tends to be around 0.0001-0.0015 Bitcoin. Block sizes are limited and can only support limited number of transactions. Therefore, miners will prioritize transactions that pay higher fees. A higher fee means the transaction can be processed sooner. This raises the threshold of making Bitcoin transactions and also effectively protects the blockchain from spams while ensuring miners still have the incentive to maintain the Bitcoin network even after all the Bitcoins are mined. Watch the video here! Huobi Pro will post a question in our Tweet via our Twitter account (https://twitter.com/Huobi_Pro) each time we put up an episode of Blockchain 101 post on our Twitter account, we will randomly select 20 people who answered in the format [UIDxxxxxxxx, correct answer] and retweet our post will be entitled to 1 HT each. Note that the UID entered MUST be a valid Huobi registered account. What are you waiting for? Fastest fingers first! Grab your HT now!
Views: 878 Huobi Global
LIVE Bitcoin Monthly Look! - January 2019 Price Prediction & News Analysis
 
01:57:04
Krown's Crypto Cave Discord - https://discord.gg/5Zwuum8 ***My fully comprehensive road map to becoming a COMPLETE Trading Boss! + VIP DIscord Access*** https://krown-trading.teachable.com/p/trade-like-a-professional-the-art-and-application-of-technical-analysis/ All my trading strategies revealed in a series of 39 Modules of Video and PowerPoint presentation format over 32 hours long + Bonus Material & Access to Two Proprietary Indicators! Reviews inside! ***Master Your Options*** - https://krown-trading.teachable.com/p/master-your-options/ - Years as a Professional Market Maker Authorized Trader synthesized down into a 42 Module Road Map for the Purpose of Derivative Domination ***Krown Jewel Indicator Mastery*** https://krown-trading.teachable.com/?affcode=236462_6ozjtirq My preferred method of scalping by timing both entries and exits with 5 unique oscillators each suited for specific trading styles ***Bitcoin Options + Futures Exchange*** (Discounted Fees Link) - https://www.deribit.com/reg-1170.7653 ***www.justlearnbitcoin.com*** The Digital Den - https://discord.gg/CsvbmDQ Checkout Bitmex (best for liquidity and leverage) - https://www.bitmex.com/register/4l6ovV this link will give you reduced fees. ***Complementary Portfolio Tracking and Balancing Tool*** https://docs.google.com/spreadsheets/d/1Y8WtgxCZen4yt8UwAmqxQjfDR42-kFQ8iRx_3rJi0CI/edit#gid=1158545460 ***Complementary Tutorial Series*** -BitMEX- https://youtu.be/tMGvXHixpzc ***Trusted & Discounted Ledger Products*** https://www.ledgerwallet.com/r/a409 If you feel so inclined to support my Coffee and Ground Beef Diet then here is a link to my BTC address - 3QnMhH3QKjoNMprArJ2PyY2t8MWPCDtmJv TradingView Affiliate Link - Gain Access to ALL of TradingView's Professional Features! https://tradingview.go2cloud.org/aff_c?offer_id=2&aff_id=11546 Also checkout my Steemit Account as I do post exclusive content here - https://steemit.com/@realcrowncrypto Twitter for Intra-day Mini Update - https://twitter.com/KrownCryptoCave Recommended Reading for Learning the Art of Trading - Technical Analysis and Stock Market Profits https://amzn.to/2qQAz7A Reminiscences of a Stock Operator https://amzn.to/2F3WD3G Legal Disclaimer - This video is meant for entertainment and educational purposes and is NOT intended as financial advice. ENJOY! #Bitcoin #BitcoinNews #BitcoinAnalysis Live Bitcoin Analysis, Top bitcoin analysis, price prediction, Bitcoin Trading, Bitcoin 2018, Bitcoin Crash, Bitcoin Moon, Bitcoin News, Bitcoin Today, Best Bitcoin Analysis, Bitcoin price, Bitcoin to 0, Where is Bitcoin Going, Bitcoin bottomed, live bitcoin analysis, live bitcoin, Bitcoin News, Bitcoin Today, Crypto, Crypto News, Crypto Analysis, Crypto Price
Views: 4780 Krown's Crypto Cave
Big Boys Reverse Their Stance on Crypto! Bitcoin ETF News! Wanchain Update
 
24:34
We welcome donations in cryptocurrency. Wanchain: 0x491C91cE78A7fc0C9dEC6AE4db506E36282d2a48 Bitcoin (BTC): 1KxwRqsHApwBSneY88vMffWLFEUEncZ5jq Ethereum (ETH): 0x6c18c77D7F4725Aaa0240695824e1b0aFAD97eF1 -------------------- Get your Ledger wallet here: https://www.ledger.com/?r=6b03fdde003f Get your Trezor wallet here: https://shop.trezor.io?a=rocktheblock.live -------------------- 🔔Subscribe Now and Stay Tuned for New Content!🔔 https://www.youtube.com/channel/UCU5MyWPFvEuh4qRGzQFnbWg?sub_confirmation=1 👉🏻For Business Inquiries: admin(at)RockTheBlock.Live Join the community! Facebook ▶ https://fb.me/rocktheblock.live Twitter ▶ https://twitter.com/RTBLTweet Instagram ▶ https://www.instagram.com/rocktheblock.live/ Website ▶ https://www.RockTheBlock.Live -------------------- #JPMorgan #ElonMusk #TimDraper Radical Finance Report: https://www.radical.finance/sample Wanchain 2019 Roadmap: https://medium.com/wanchain-foundation/announcing-the-wanchain-staking-pilot-and-2019-roadmap-overview-3feaeb5c113a
Views: 100 Rock The Block Live
Blockchain - The block structure
 
02:51
Blockchain - The block structure Watch more videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Parth Joshi, Tutorials Point India Private Limited
How Blockchain can transform India | Jaspreet Bindra | TEDxChennai
 
18:50
Blockchain is currently at the peak of the Hype Cycle. It is a simple concept, yet difficult to understand and comprehend. It is also in the same place as the Internet was in 1995 – very early, with its major applications yet to be built. Blockchain is a much a philosophy as a technology, and has the potential to change the world as the Internet did. It promises to radically transform identity, agriculture, money, energy, governance, and pretty much everything else, especially in the emerging countries. This TEDx talk demystifies blockchain as never before, and explains how it can change the world around you… Jaspreet Bindra is a digital transformation and Blockchain expert. Until very recently, he was the Chief Digital Officer of $20bn Mahindra Group; and he continues as their Digital Adviser. He speaks, writes, teaches and consults on Digital Transformation and Blockchain, and is currently building a company around the same. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx
Views: 488885 TEDx Talks
Bitcoin- A quest for better money | Sathvik Vishwanath | TEDxBITBangalore
 
17:59
In a world of traders, businessmen and billionaires, the arrival of Cryptocurrency was ridiculed as a fad among many. With the passage of time the growth of Bitcoins has seen no bounds and is advancing to be the big change in the world of finance and commerce. Sathvik Vishwanath, the founder of Unocoin talks about the journey of Bitcoin and its impact on the trading and commerce scene on the planet and where the future of Bitcoin is headed. The CEO and Co-founder of Unocoin, Sathvik Vishwanath is a bitcoin and block chain entrepreneur. He is on a mission to make bitcoin, the world's first open-source decentralized digital currency. He spear headed the venture that emerged to be India's first entrant into the bitcoin space. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx
Views: 987 TEDx Talks
Bitcoin and the Blockchain | Rick Falkvinge | TEDxBucharest
 
18:17
The internet brings much more changes than we could possibly ever imagine, typical of a very disruptive technology, as the generation who invents it can only think of the new technology in terms of what is replacing. But it's the generation after them which sees the new technology in its own right, in its own potential and builds things on it on its own merits. It happened with the electricity, with the print press and with every major disruptive technology, now it's happening with the internet. In a true Future Spoiler, Rick shares with the audience how bitcoin and it's underline technology, the blockchain technology, will influence the power struggles for the next decades, where the power will about the ledger on top of everything else, a fight which will stand over finance and core governmental functions. Rick Falkvinge | Political Evangelist | Founder of the Swedish Pirate Party | www.falkvinge.net | An entrepreneur from the age of 16, Rick is the Founder of the first Pirate Party. Under his leadership, the Party had a resounding success at the 2009 European Elections, with two elected representatives. He is now a political evangelist for his ideas on freedom of speech and expression. While Foreign Policy Magazine named Rick a Top Global Thinker, TIME Magazine shortlisted him as one of the world’s most influential people. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at http://ted.com/tedx
Views: 71015 TEDx Talks
Bitcoin Q&A: What is Segregated Witness?
 
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What is Segregated Witness (SegWit)? How do you know you’re using SegWit? SegWit fixes transaction malleability and enables further upgrades towards Bitcoin smart contracts. Can transaction malleability lead to denial-of-service (DoS) attacks? Does SegWit put witness data in a different block? Did SegWit change transaction validation? versus? Are there any security risks of invalid blocks? CORRECTION: At ~2:07, I stated the incorrect BIP number for the Bech32 address format, which should be BIP173. BIP176 is about "bits" denomination. https://github.com/bitcoin/bips/blob/master/bip-0173.mediawiki More on SegWit: https://bitcoincore.org/en/2016/01/26/segwit-benefits/ These questions are from the MOOC 9.3 and 9.5 sessions which took place on March 2nd and March 16th, 2018 respectively. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles. If you want early-access to talks and a chance to participate in the monthly live Q&As with Andreas, become a patron: https://www.patreon.com/aantonop RELATED: The Lightning Network - https://www.youtube.com/playlist?list=PLPQwGV1aLnTurL4wU_y3jOhBi9rrpsYyi SegWit adoption - https://youtu.be/KCsTVTRk6I4 Advanced Bitcoin Scripting Part 1: Transactions and Multi-sig - https://youtu.be/8FeAXjkmDcQ Advanced Bitcoin Scripting Part 2: SegWit, Consensus, and Trustware - https://youtu.be/pQbeBduVQ4I How do I choose a wallet? - https://youtu.be/tN6b62sEpsY Hot vs. cold wallets - https://youtu.be/Aji_E9sw0AE SegWit adoption - https://youtu.be/KCsTVTRk6I4 Secure, tiered storage system - https://youtu.be/uYIVuZgN95M Decentralised exchanges and counterparty risk - https://youtu.be/hi_jaw0dT9M Decentralised exchanges with fiat - https://youtu.be/3Url8tbQEkA How do I secure my bitcoin? - https://youtu.be/vt-zXEsJ61U How do mnemonic seeds work? - https://youtu.be/wWCIQFNf_8g HODLing and the "get free" scheme - https://youtu.be/MhOwmsW1YNI How to get people to care about security - https://youtu.be/Ji1lS9NMz1E Bitcoin as everyday currency - https://youtu.be/xYvvSV4mjH0 Irreversibility and consumer protection - https://youtu.be/R107YWu5XzU Hyperbitcoinization - https://youtu.be/AB5MU5fXKfo Job opportunities with cryptocurrencies - https://youtu.be/89_p4pDlQtI How long until mainstream adoption? - https://youtu.be/y3cKBDBabtA What is the biggest adoption hurdle? - https://youtu.be/jHgyHF3F2TI Andreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and respected figures in bitcoin. Follow on Twitter: @aantonop https://twitter.com/aantonop Website: https://antonopoulos.com/ He is the author of two books: “Mastering Bitcoin,” published by O’Reilly Media and considered the best technical guide to bitcoin; “The Internet of Money,” a book about why bitcoin matters. THE INTERNET OF MONEY, v1: https://www.amazon.co.uk/Internet-Money-collection-Andreas-Antonopoulos/dp/1537000454/ref=asap_bc?ie=UTF8 [NEW] THE INTERNET OF MONEY, v2: https://www.amazon.com/Internet-Money-Andreas-M-Antonopoulos/dp/194791006X/ref=asap_bc?ie=UTF8 MASTERING BITCOIN: https://www.amazon.co.uk/Mastering-Bitcoin-Unlocking-Digital-Cryptocurrencies/dp/1449374042 [NEW] MASTERING BITCOIN, 2nd Edition: https://www.amazon.com/Mastering-Bitcoin-Programming-Open-Blockchain/dp/1491954388 Subscribe to the channel to learn more about Bitcoin & open blockchains! Music: "Unbounded" by Orfan (https://www.facebook.com/Orfan/) Outro Graphics: Phneep (http://www.phneep.com/) Outro Art: Rock Barcellos (http://www.rockincomics.com.br/)
Views: 12481 aantonop
From Bitcoin to the Internet of Value | Diego Gutiérrez Zaldívar | TEDxSanFrancisco
 
15:47
Diego Guiterrez Zalvidar shares how after being a successful internet entrepreneur he started the bitcoin community in Latin America with the purpose of using bitcoin and blockchain for good. CEO and Co-Founder of RSK Labs. Entrepreneur, pioneer of web development in Latin America and leader in fostering bitcoin technology in Latin America. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx
Views: 726 TEDx Talks
Blockchain 101 Ep 20 - What happens after I initiate a Bitcoin transaction?
 
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When you initiate a Bitcoin transaction, the information is broadcasted to the whole network, after mining nodes receive the information, they will store it in a local pool for some basic validations, such as checking for double spending. If it’s valid, it will then be moved to the pool of “Unconfirmed Transactions” for processing. If it fails, this transaction, marked as an “Invalid Transaction”, will not be processed. This means mining nodes are not only competing with their hashing power, but also validating transactions promptly to update their pool of “Unconfirmed Transactions.” After obtaining the right to update the ledger, miners will take around 1000 transactions from the “Unconfirmed Transactions” pool to process. Sometimes our transaction may not be processed in time, due to an overwhelmingly number of unconfirmed transactions and each block can only record a limited number of transactions. Watch the video here! Huobi Pro will post a question in our Tweet via our Twitter account (https://twitter.com/Huobi_Pro) each time we put up an episode of Blockchain 101 post on our Twitter account, we will randomly select 20 people who answered in the format [UIDxxxxxxxx, correct answer] and retweet our post will be entitled to 1 HT each. Note that the UID entered MUST be a valid Huobi registered account. What are you waiting for? Fastest fingers first! Grab your HT now!
Views: 670 Huobi Global
A Larger Block Size is More Environmentally Friendly
 
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Craig Wright & Jimmy Nguyen discuss how larger blocksizes, fitting more transactions, are more environmentally friendly. "The amount of energy for mining a 1 MB block is the *same* as mining a 1 TB block, because it's the same hash puzzle. So if you have more transactions, the amount of electricity per transaction is less. So, if we want to be environmentally friendly, raise the block size." Full original link: https://youtu.be/Fx2Cne2Vw9M
Views: 285 Crypto Me!
Bitcoin: How Cryptocurrencies Work
 
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Whether or not it's worth investing in, the math behind Bitcoin is an elegant solution to some complex problems. Hosted by: Michael Aranda Special Thanks: Dalton Hubble Learn more about Cryptography: https://www.youtube.com/watch?v=-yFZGF8FHSg ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters—we couldn't make SciShow without them! Shout out to Bella Nash, Kevin Bealer, Mark Terrio-Cameron, Patrick Merrithew, Charles Southerland, Fatima Iqbal, Benny, Kyle Anderson, Tim Curwick, Will and Sonja Marple, Philippe von Bergen, Bryce Daifuku, Chris Peters, Patrick D. Ashmore, Charles George, Bader AlGhamdi ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: https://bitinfocharts.com/ https://chrispacia.wordpress.com/2013/09/02/bitcoin-mining-explained-like-youre-five-part-2-mechanics/ https://www.youtube.com/watch?v=Lx9zgZCMqXE https://www.youtube.com/watch?v=nQZUi24TrdI https://bitcoin.org/en/how-it-works http://www.forbes.com/sites/investopedia/2013/08/01/how-bitcoin-works/#36bd8b2d25ee http://www.makeuseof.com/tag/how-does-bitcoin-work/ https://blockchain.info/charts/total-bitcoins https://en.bitcoin.it/wiki/Controlled_supply https://www.bitcoinmining.com/ http://bitamplify.com/mobile/?a=news Image Sources: https://commons.wikimedia.org/wiki/File:Cryptocurrency_Mining_Farm.jpg
Views: 2675756 SciShow
Blockchain is Eating Wall Street | Alex Tapscott | TEDxSanFrancisco
 
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Author of best seller "blockchain revolution", Alex share in this talk about how the blockchain the technology behind bitcoin Is changing money, business, and the world. Alex Tapscott is the CEO and Founder of Northwest Passage Ventures, a consulting firm focused on early-stage, high growth companies in the Canadian and U.S. Capital markets. His is also co-author, with Don Tapscott, of the new book Blockchain Revolution: How the Technology Behind Bitcoin Is Changing Money, Business, and the World (Portfolio / Penguin Random House 2016). Alex was Director of Institutional Equity Sales at Canaccord Genuity Inc. from 2008 to 2015. He managed a diverse client base of value, growth, long/short equity, merger-arbitrage and activist investors, including many of the largest asset managers in Canada and some of the largest hedge funds in New York. A graduate of Amherst College and a CFA Charterholder, Alex serves as a research fellow for the Global Solutions Network (GSN) program at the Martin Prosperity Institute at the Rotman School of Business in Toronto and sits on the board of CAMH Engage, a young leadership counci This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at http://ted.com/tedx
Views: 658422 TEDx Talks
LIVE Bitcoin - Proof of Keys (or REKT?!) January 2019 News, Price & Trade Analysis
 
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Krown's Crypto Cave Discord - https://discord.gg/5Zwuum8 ***My fully comprehensive road map to becoming a COMPLETE Trading Boss! + VIP DIscord Access*** https://krown-trading.teachable.com/p/trade-like-a-professional-the-art-and-application-of-technical-analysis/ All my trading strategies revealed in a series of 30 Modules of Video and PowerPoint presentation format over 28 hours long + Bonus Material! Reviews inside! ***Master Your Options*** - https://krown-trading.teachable.com/p/master-your-options/ - Years as a Professional Market Maker Authorized Trader synthesized down into a 42 Module Road Map for the Purpose of Derivative Domination ***Krown Jewel Indicator Mastery*** https://krown-trading.teachable.com/?affcode=236462_6ozjtirq My preferred method of scalping by timing both entries and exits with 5 unique oscillators each suited for specific trading styles ***Bitcoin Options + Futures Exchange*** (Discounted Fees Link) - https://www.deribit.com/reg-1170.7653 ***www.justlearnbitcoin.com*** The Frontier https://discord.gg/vYf3AMS Checkout Bitmex (best for liquidity and leverage) - https://www.bitmex.com/register/4l6ovV this link will give you reduced fees. ***Complementary Portfolio Tracking and Balancing Tool*** https://docs.google.com/spreadsheets/d/1Y8WtgxCZen4yt8UwAmqxQjfDR42-kFQ8iRx_3rJi0CI/edit#gid=1158545460 ***Complementary Tutorial Series*** -BitMEX- https://youtu.be/tMGvXHixpzc ***Trusted & Discounted Ledger Products*** https://www.ledgerwallet.com/r/a409 If you feel so inclined to support my Coffee and Ground Beef Diet then here is a link to my BTC address - 3QnMhH3QKjoNMprArJ2PyY2t8MWPCDtmJv TradingView Affiliate Link - Gain Access to ALL of TradingView's Professional Features! https://tradingview.go2cloud.org/aff_c?offer_id=2&aff_id=11546 Also checkout my Steemit Account as I do post exclusive content here - https://steemit.com/@realcrowncrypto Twitter for Intra-day Mini Update - https://twitter.com/KrownCryptoCave Recommended Reading for Learning the Art of Trading - Technical Analysis and Stock Market Profits https://amzn.to/2qQAz7A Reminiscences of a Stock Operater https://amzn.to/2F3WD3G Legal Disclaimer - This video is meant for entertainment and educational purposes and is NOT intended as financial advice. ENJOY! #Bitcoin #BitcoinNews #BitcoinAnalysis Live Bitcoin Analysis, Top bitcoin analysis, price prediction, Bitcoin Trading, Bitcoin 2018, Bitcoin Crash, Bitcoin Moon, Bitcoin News, Bitcoin Today, Best Bitcoin Analysis, Bitcoin price, Bitcoin to 0, Where is Bitcoin Going, Bitcoin bottomed, live bitcoin analysis, live bitcoin
Views: 2999 Krown's Crypto Cave
What is Bitcoin - Bitcoin Mining - How bitcoin works - Explained - In Hindi
 
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What is Bitcoin, what is bitcoin mining, how bitcoin works I am going to explain you in Hindi Bitcoin was created by the "Satoshi Nakamoto". Bitcoin is a form of digital currency, created and stored electronically. No institution or country controls the bitcoin(decentralised currency). Bitcoins are not printed like normal currency for example dollars, euro, pounds, Indian rupee etc. Bitcoin is produced digitally by people by solving complex mathematical problems. It’s a type of cryptocurrency. Or we can call as mining by using computing power. Cryptocurrency A form of currency based on mathematics alone. Instead of fiat currency, which is printed, cryptocurrency is produced by solving mathematical problems based on cryptography. This can be used to purchase goods and services, the bitcoins can be purchased online and can be sell online. You cannot make unlimited bitcoins as the protocol or coding associated with it does not do so, the coding or algorithm derived was in such a way that only 21 Million bitcoins will be produced in the world. However the bitcoin can be divided into smaller parts (the smallest divisible amount is one hundred million of a single bitcoin and is called satoshi named on founder). When your bitcoins are sent, there’s no getting them back, unless the recipient returns them to you. They’re gone forever. Bitcoin transactions are sent from and to electronic bitcoin wallets, and are digitally signed for security. There are no bitcoins, only records of bitcoin transactions. To send bitcoins, you need two things: a bitcoin address and a private key. A bitcoin address is generated randomly, and is simply a sequence of letters and numbers. The private key is another sequence of letters and numbers, but unlike your bitcoin address, this is kept secret. How does Bitcoin mining work Lots of people send bitcoins over the internet all the time. It's very difficult to track the transactions like who sent to whom, so the bitcoin network takes a list of all transactions for a particular period of time and list them in a block. Now it’s a miners job to confirm those transactions and write them into general ledger. How miners make Bitcoins All miners compete among themselves to create a Hash by a code specifically written to mine blocks. Every time someone successfully creates a hash 25 bitcoins are given as reward and blockchain is updated. This is the incentive to mine and keep transactions working. Creating hash is easy but bitcoin network makes it more difficult over the time as part of the algorithm used. Bitcoin protocol does not accept old hash, its demands the hash to look some different way having some zeroes in starting etc.. Miners use a random piece of data(called nonce) to create hash\blocks they don’t mess with other people data. Nonce used with the transaction data to create a hash.If the hash doesn’t fit the required format, the nonce is changed, and the whole thing is hashed again. It can take many attempts to find a nonce that works, and all the miners in the network are trying to do it at the same time. That’s how miners earn their bitcoins. How to Buy\Sell Bitcoins Today in many countries we have bitcoin exchanges where you can online buy and sell bitcoin easily. Bitcoin wallets are used to store bitcoins. ASIC An Application Specific Integrated Circuit is a silicon chip specifically designed to do a single task. In the case of bitcoin, they are designed to process SHA-256 hashing problems to mine new bitcoins. Bitcoin ATM A bitcoin ATM is a physical machine that allows a customer to buy bitcoin with cash. Hash A mathematical process that takes a variable amount of data and produces a shorter, fixed-length output. A hashing function has two important characteristics. 1. It is mathematically difficult to work out what the original input was by looking at the output. 2. Changing even the tiniest part of the input will produce an entirely different output. Good site https://www.bitcoinmining.com/getting-started/ Bitcoin Mining Software https://www.bitcoinmining.com/bitcoin-mining-software/ Bitcoin exchanges List https://bitcoin.org/en/exchanges Please watch the complete video for proper understanding. If you like my video please make me happy by sharing it on social media and subscribing my YouTube channel Links to things I use to create my videos Samson Go Mic : http://amzn.to/2naBtLM Pop Filter : http://amzn.to/2nAxB7N JBL Earphones : http://amzn.to/2naHx7i Microsoft Office 365 : http://amzn.to/2nojNNc Memory Card : http://amzn.to/2naCzar HP Laptop : http://amzn.to/2nG2XqJ Share, Support, Subscribe!!! Youtube: https://www.youtube.com/c/TECHBULU Twitter: https://twitter.com/techbulu Facebook: https://www.facebook.com/techbulu/ Pinterest: https://www.pinterest.com/techbulu/ Google Plus: https://goo.gl/sZhdc0 BlogSite: http://www.techbulu.com/
Views: 1884 TECH BULU